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SECURITIES - Summary of securities (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Available for sale securities |  |
Amortized Cost | $ 205,602 | $ 325,960
Gross Unrealized Gains |  | 469
Gross Unrealized Losses | (26,556) | (21,792)
Estimated Fair Value | 179,046 | 304,637
Held to maturity securities |  |
Amortized Cost | 77,154 | 45,097
Gross Unrealized Gains |  | 115
Gross Unrealized Losses | (2,266) | (1,442)
Estimated Fair Value | 74,888 | 43,770
U.S. Treasury securities |  |
Available for sale securities |  |
Amortized Cost | 49,659 | 149,614
Gross Unrealized Losses | (7,824) | (7,517)
Estimated Fair Value | 41,835 | 142,097
Held to maturity securities |  |
Amortized Cost | 73,002 | 39,902
Gross Unrealized Gains |  | 115
Gross Unrealized Losses | (2,264) | (1,440)
Estimated Fair Value | 70,738 | 38,577
Obligations of U.S. Government sponsored agencies |  |
Available for sale securities |  |
Amortized Cost | 31,888 | 24,935
Gross Unrealized Losses | (4,108) | (3,186)
Estimated Fair Value | 27,780 | 21,749
Obligations of states and political subdivisions |  |
Available for sale securities |  |
Amortized Cost | 63,941 | 90,701
Gross Unrealized Gains |  | 88
Gross Unrealized Losses | (9,820) | (7,603)
Estimated Fair Value | 54,121 | 83,186
Held to maturity securities |  |
Amortized Cost | 4,152 | 5,195
Gross Unrealized Losses | (2) | (2)
Estimated Fair Value | 4,150 | 5,193
Mortgage-backed securities |  |
Available for sale securities |  |
Amortized Cost | 38,692 | 38,701
Gross Unrealized Losses | (2,852) | (2,064)
Estimated Fair Value | 35,840 | 36,637
Corporate notes |  |
Available for sale securities |  |
Amortized Cost | 20,682 | 21,005
Gross Unrealized Gains |  | 381
Gross Unrealized Losses | (1,944) | (1,392)
Estimated Fair Value | 18,738 | 19,994
Certificates of deposit |  |
Available for sale securities |  |
Amortized Cost | 740 | 1,004
Gross Unrealized Losses | (8) | (30)
Estimated Fair Value | $ 732 | $ 974

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